
administration.fm
A31003-C1000-M101-1-76A9, 03/2016
OpenScape Desk Phone CP200/400/600, Administrator Documentation
55
Administration
IP Network Parameters
Administration via WBM
Network > QoS > Service >
Administration via Local Phone
3.4.1.2
Layer 3 / Diffserv
Diffserv assigns a class of service to an IP packet by adding an entry in the IP header.
Traffic flows are classified into 3 per-hop behavior groups:
1. Default
Any traffic that does not meet the requirements of any of the other defined classes is placed
in the default per-hop behaviour group. Typically, the forwarding has best-effort forwarding
characteristics. The DSCP (Diffserv Codepoint) value for Default is "0 0 0 0 0 0".
2. Expedited Forwarding (EF referred to RFC 3246)
Expedited Forwarding is used for voice (RTP streams) by default. It effectively creates a
special low-latency path in the network. The DSCP (Diffserv Codepoint) value for EF is
"1 0 1 1 1 0".
3. Assured Forwarding (AF referred to RFC 2597)
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--- Admin
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--- Network
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--- QoS
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--- Service
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Layer 2
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Layer 2 voice
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Layer 2 signalling
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Layer 2 default
Layer 2 signalling
Layer 3 voice
Layer 2 voice
Layer 2
5
QoS
3
Layer 3
EF
;
Service
MLPP
EF
Priority
EF
Immediate
EF
Flash
EF
Flash override
Submit
Reset
Layer 2 default 0
Layer 3 signalling AF31